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Kumar H, Sharma K. Chitosan catalyzed synthesis and mechanistic study of Steroidal 2H-Pyran ring formation. Steroids 2023; 196:109243. [PMID: 37116637 DOI: 10.1016/j.steroids.2023.109243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/20/2023] [Accepted: 04/23/2023] [Indexed: 04/30/2023]
Abstract
A simple and convenient method is reported for the preparation of steroidal 2H-pyran 2 by reacting 3β-acetoxy cholest-5-ene-7-one 1 with N-benzyl-2-cyanoacetamide in presence of chitosan, a green and heterogeneous catalyst. The product 2 was characterized by using NMR (1H and 3C), IR, and mass spectroscopy. The mechanism of 2H-pyran ring formation is described by employing theoretical B3LYP/6-31G (d) density functional method. The reaction undergoes via formation of two intermediates A and B, and each intermediate undergoes through a transition state TS1 and TS2. The molecular properties like relative energy and FMO analysis were used to explain the mechanism of the reaction. The HOMOs and LUMOs were found in support of the present reaction mechanism. The stability of all the calculated structures which includes reactant (1a), intermediates (A and B), product (2a) as well as TS1 and TS2 transition states, was supported by calculating their energy minima and fundamental frequencies.
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Affiliation(s)
- Himanshi Kumar
- Department of Chemistry, Faculty of Science, Shree Guru Gobind Singh Tricentenary University, Gurugram 122505, Haryana, INDIA
| | - Kamlesh Sharma
- Department of Chemistry, Faculty of Science, Shree Guru Gobind Singh Tricentenary University, Gurugram 122505, Haryana, INDIA.
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Argenziano R, Agustin-Salazar S, Panaro A, Calarco A, Di Salle A, Aprea P, Cerruti P, Panzella L, Napolitano A. Combining the Potent Reducing Properties of Pecan Nutshell with a Solvent-Free Mechanochemical Approach for Synthesizing High Ag 0 Content-Silver Nanoparticles: An Eco-Friendly Route to an Efficient Multifunctional Photocatalytic, Antibacterial, and Antioxidant Material. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:821. [PMID: 36903701 PMCID: PMC10005451 DOI: 10.3390/nano13050821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/17/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
A straightforward, low-cost, and scalable solid-state mechanochemical protocol for the synthesis of silver nanoparticles (AgNP) based on the use of the highly reducing agri-food by-product pecan nutshell (PNS) is reported herein. Under optimized conditions (180 min, 800 rpm, PNS/AgNO3 ratio = 55/45 w/w), a complete reduction in silver ions was achieved, leading to a material containing ca. 36% w/w Ag0 (X-ray diffraction analysis). Dynamic light scattering and microscopic analysis showed a uniform size distribution (15-35 nm average diameter) of the spherical AgNP. The 2,2-Diphenyl-1-picrylhydrazyl (DPPH) assay revealed lower-although still absolutely high (EC50 = 5.8 ± 0.5 mg/mL)-antioxidant properties for PNS for the further incorporation of AgNP, supporting the efficient reduction of Ag+ ions by PNS phenolic compounds. Photocatalytic experiments indicated that AgNP-PNS (0.4 mg/mL) was able to induce the >90% degradation of methylene blue after 120 min visible light irradiation, with good recycling stability. Finally, AgNP-PNS demonstrated high biocompatibility and significantly light-enhanced growth inhibition properties against Pseudomonas aeruginosa and Streptococcus mutans at concentrations as low as 250 μg/mL, also eliciting an antibiofilm effect at 1000 μg/mL. Overall, the adopted approach allowed to reuse a cheap and abundant agri-food by-product and required no toxic or noxious chemicals, making AgNP-PNS a sustainable and easy-to-access multifunctional material.
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Affiliation(s)
- Rita Argenziano
- Department of Chemical Sciences, University of Naples “Federico II”, Via Cintia 4, I-80126 Naples, Italy
| | - Sarai Agustin-Salazar
- Institute for Polymers, Composites and Biomaterials (IPCB-CNR), Via Campi Flegrei 34, I-80078 Pozzuoli, Italy
| | - Andrea Panaro
- Department of Chemical Sciences, University of Naples “Federico II”, Via Cintia 4, I-80126 Naples, Italy
- Institute for Polymers, Composites and Biomaterials (IPCB-CNR), Via Campi Flegrei 34, I-80078 Pozzuoli, Italy
| | - Anna Calarco
- Research Institute on Terrestrial Ecosystems (IRET-CNR), Via P. Castellino 111, I-80131 Naples, Italy
| | - Anna Di Salle
- Research Institute on Terrestrial Ecosystems (IRET-CNR), Via P. Castellino 111, I-80131 Naples, Italy
| | - Paolo Aprea
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples “Federico II”, Piazzale V. Tecchio 80, I-80125 Naples, Italy
| | - Pierfrancesco Cerruti
- Institute for Polymers, Composites and Biomaterials (IPCB-CNR), Via Campi Flegrei 34, I-80078 Pozzuoli, Italy
| | - Lucia Panzella
- Department of Chemical Sciences, University of Naples “Federico II”, Via Cintia 4, I-80126 Naples, Italy
| | - Alessandra Napolitano
- Department of Chemical Sciences, University of Naples “Federico II”, Via Cintia 4, I-80126 Naples, Italy
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Kheilkordi Z, Mohammadi Ziarani G, Mohajer F, Badiei A, Varma RS. Synthesis and Application of Novel Nanomagnetic Catalyst Fe3O4@SiO2@Pr–Gu–Cr–COOH in the Green Multi-component Synthesis of 1-(Benzothiazolylamino)methyl-2-naphthol. J Inorg Organomet Polym Mater 2023. [DOI: 10.1007/s10904-023-02556-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Valiey E, Dekamin MG, Bondarian S. Sulfamic acid grafted to cross-linked chitosan by dendritic units: a bio-based, highly efficient and heterogeneous organocatalyst for green synthesis of 2,3-dihydroquinazoline derivatives. RSC Adv 2022; 13:320-334. [PMID: 36605675 PMCID: PMC9768850 DOI: 10.1039/d2ra07319f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
In this work, novel cross-linked chitosan by the G1 dendrimer from condensation of melamine and toluene-2,4-diisocyante terminated by sulfamic acid groups (CS-TDI-Me-TDI-NHSO3H), as a bio-based and heterogeneous acidic organocatalyst, was designed and prepared. Also, the structure of the prepared organocatalyst was characterized by Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and thermogravimetric analysis/derivative thermogravimetry (TGA/DTA). Subsequently, the catalytic performance of the biobased and dendritic CS-TDI-Me-TDI-NHSO3H, as a multifunctional solid acid, was evaluated for the preparation of 2,3-dihydroquinazoline derivatives through a three-component reaction by following green chemistry principles. Some of the advantages of this new protocol include high to excellent yields and short reaction times as well as easy preparation and remarkable catalyst stability of the introduced acidic organocatalyst. The CS-TDI-Me-TDI-SO3H catalyst can be used for up to five cycles for the preparation of quinazoline derivatives with a slight decrease in its catalytic activity.
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Affiliation(s)
- Ehsan Valiey
- Pharmaceutical and Heterocyclic Compounds Research Laboratory, Department of Chemistry, Iran University of Science and TechnologyTehran1684613314Iran
| | - Mohammad G. Dekamin
- Pharmaceutical and Heterocyclic Compounds Research Laboratory, Department of Chemistry, Iran University of Science and TechnologyTehran1684613314Iran
| | - Shirin Bondarian
- Pharmaceutical and Heterocyclic Compounds Research Laboratory, Department of Chemistry, Iran University of Science and TechnologyTehran1684613314Iran
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Mohammadi Ziarani G, Khademi M, Mohajer F, Badiei A, Varma RS. The Synthesis of 2,2-BIS(1-INDOL-3-YL)Acenaphthylene-1(2)-Ones Using Nanocatalysis: Fluorescent Sensing for Cu 2+ Ions. ECOLOGICAL CHEMISTRY AND ENGINEERING S 2022; 29:463-475. [DOI: 10.2478/eces-2022-0033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Abstract
2,2-bis(1H-indol-3-yl)acenaphthylene-1(2H)-ones were synthesised by the reaction of acenaphthenequinone and 2 equivalents of indole using Fe3O4@SiO2@Si-Pr-NH-CH2CH2NH2 as the basic magnetic nanocatalyst, assembled under greener and sustainable conditions in high purity and yields. Furthermore, the photoluminescence properties of 2,2-bis(2-methyl-1H-indol-3-yl)acenaphthylene-1(2H)-one were exploited for the sensing of copper ions in the mixed solvent systems comprising H2O and CH3CN in excitation wavelength at 410 nm with a detection limit of 9.5 ∙ 10–6 M.
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Affiliation(s)
- Ghodsi Mohammadi Ziarani
- Department of Organic Chemistry, Faculty of Chemistry , University of Alzahra , Tehran , Iran , P.O. Box: 1993893973, phone/fax: +98821 6613927
| | - Mahdieh Khademi
- Department of Organic Chemistry, Faculty of Chemistry , University of Alzahra , Tehran , Iran , P.O. Box: 1993893973, phone/fax: +98821 6613927
| | - Fatemeh Mohajer
- Department of Organic Chemistry, Faculty of Chemistry , University of Alzahra , Tehran , Iran , P.O. Box: 1993893973, phone/fax: +98821 6613927
| | - Alireza Badiei
- School of Chemistry, College of Science , University of Tehran , Iran
| | - Rajender S. Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute , Palacky University , Šlechtitelů 27, 783 71 Olomouc , Czech Republic
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Mohammadi Ziarani G, Bagheri M, Bahar S, Badiei A, Ghasemi JB, Karimi F. Spiroindeno-pyridineindoles (SIPIs) as new visible colorimetric pH indicators. CHEMOSPHERE 2022; 306:135630. [PMID: 35809751 DOI: 10.1016/j.chemosphere.2022.135630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 06/22/2022] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
Some new, highly selective, and sensitive colorimetric pH indicators, spiro[4H-indeno-[1,2-b]pyridine-4,3'-[3H]indoles] (SIPIs) in aqueous solution were developed. SIPIs were synthesized via a one-pot four-component condensation of isatin derivatives, β-diketones 1,3-indandione, and ammonium acetate using FSi-PrNH-BuSO3H as a nanocatalyst in EtOH. According to the experimental evaluations, it was found that SIPI derivatives are pH indicators for naked-eye detection of OH- ion with intense color changes from orange to purple in the pH range of 10.3-12.
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Affiliation(s)
- Ghodsi Mohammadi Ziarani
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Vanak Square, P.O. Box 1993893973, Tehran, Iran.
| | - Maedeh Bagheri
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Vanak Square, P.O. Box 1993893973, Tehran, Iran
| | - Shahriar Bahar
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Vanak Square, P.O. Box 1993893973, Tehran, Iran
| | - Alireza Badiei
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Jahan B Ghasemi
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Fatemeh Karimi
- Department of Chemical Engineering, Quchan University of Technology; and UJ, Iran.
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Hooshmand SE, Yazdani H, Hulme C. Six‐Component Reactions and Beyond: The Nuts and Bolts. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Hossein Yazdani
- Independent researcher Independent Researcher Tehran IRAN (ISLAMIC REPUBLIC OF)
| | - Christopher Hulme
- The University of Arizona Department of Chemistry and Biochemistry Tucson UNITED STATES
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